arch/arm/mach-orion/common.c

   1 /*
   2  * arch/arm/mach-orion/common.c
   3  *
   4  * Core functions for Marvell Orion System On Chip
   5  *
   6  * Maintainer: Tzachi Perelstein <tzachi@marvell.com>
   7  *
   8  * This file is licensed under  the terms of the GNU General Public
   9  * License version 2. This program is licensed "as is" without any
  10  * warranty of any kind, whether express or implied.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/serial_8250.h>
  17 #include <linux/mbus.h>
  18 #include <linux/mv643xx_eth.h>
  19 #include <linux/mv643xx_i2c.h>
  20 #include <linux/ata_platform.h>
  21 #include <asm/page.h>
  22 #include <asm/setup.h>
  23 #include <asm/timex.h>
  24 #include <asm/mach/arch.h>
  25 #include <asm/mach/map.h>
  26 #include <asm/mach/time.h>
  27 #include <asm/arch/hardware.h>
  28 #include <asm/arch/orion.h>
  29 #include <asm/plat-orion/ehci-orion.h>
  30 #include <asm/plat-orion/orion_nand.h>
  31 #include <asm/plat-orion/time.h>
  32 #include "common.h"
  33
  34 /*****************************************************************************
  35  * I/O Address Mapping
  36  ****************************************************************************/
  37 static struct map_desc orion_io_desc[] __initdata = {
  38         {
  39                 .virtual        = ORION_REGS_VIRT_BASE,
  40                 .pfn            = __phys_to_pfn(ORION_REGS_PHYS_BASE),
  41                 .length         = ORION_REGS_SIZE,
  42                 .type           = MT_DEVICE
  43         },
  44         {
  45                 .virtual        = ORION_PCIE_IO_VIRT_BASE,
  46                 .pfn            = __phys_to_pfn(ORION_PCIE_IO_PHYS_BASE),
  47                 .length         = ORION_PCIE_IO_SIZE,
  48                 .type           = MT_DEVICE
  49         },
  50         {
  51                 .virtual        = ORION_PCI_IO_VIRT_BASE,
  52                 .pfn            = __phys_to_pfn(ORION_PCI_IO_PHYS_BASE),
  53                 .length         = ORION_PCI_IO_SIZE,
  54                 .type           = MT_DEVICE
  55         },
  56         {
  57                 .virtual        = ORION_PCIE_WA_VIRT_BASE,
  58                 .pfn            = __phys_to_pfn(ORION_PCIE_WA_PHYS_BASE),
  59                 .length         = ORION_PCIE_WA_SIZE,
  60                 .type           = MT_DEVICE
  61         },
  62 };
  63
  64 void __init orion_map_io(void)
  65 {
  66         iotable_init(orion_io_desc, ARRAY_SIZE(orion_io_desc));
  67 }
  68
  69 /*****************************************************************************
  70  * UART
  71  ****************************************************************************/
  72
  73 static struct resource orion_uart_resources[] = {
  74         {
  75                 .start          = UART0_PHYS_BASE,
  76                 .end            = UART0_PHYS_BASE + 0xff,
  77                 .flags          = IORESOURCE_MEM,
  78         },
  79         {
  80                 .start          = IRQ_ORION_UART0,
  81                 .end            = IRQ_ORION_UART0,
  82                 .flags          = IORESOURCE_IRQ,
  83         },
  84         {
  85                 .start          = UART1_PHYS_BASE,
  86                 .end            = UART1_PHYS_BASE + 0xff,
  87                 .flags          = IORESOURCE_MEM,
  88         },
  89         {
  90                 .start          = IRQ_ORION_UART1,
  91                 .end            = IRQ_ORION_UART1,
  92                 .flags          = IORESOURCE_IRQ,
  93         },
  94 };
  95
  96 static struct plat_serial8250_port orion_uart_data[] = {
  97         {
  98                 .mapbase        = UART0_PHYS_BASE,
  99                 .membase        = (char *)UART0_VIRT_BASE,
 100                 .irq            = IRQ_ORION_UART0,
 101                 .flags          = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
 102                 .iotype         = UPIO_MEM,
 103                 .regshift       = 2,
 104                 .uartclk        = ORION_TCLK,
 105         },
 106         {
 107                 .mapbase        = UART1_PHYS_BASE,
 108                 .membase        = (char *)UART1_VIRT_BASE,
 109                 .irq            = IRQ_ORION_UART1,
 110                 .flags          = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
 111                 .iotype         = UPIO_MEM,
 112                 .regshift       = 2,
 113                 .uartclk        = ORION_TCLK,
 114         },
 115         { },
 116 };
 117
 118 static struct platform_device orion_uart = {
 119         .name                   = "serial8250",
 120         .id                     = PLAT8250_DEV_PLATFORM,
 121         .dev                    = {
 122                 .platform_data  = orion_uart_data,
 123         },
 124         .resource               = orion_uart_resources,
 125         .num_resources          = ARRAY_SIZE(orion_uart_resources),
 126 };
 127
 128 /*******************************************************************************
 129  * USB Controller - 2 interfaces
 130  ******************************************************************************/
 131
 132 static struct resource orion_ehci0_resources[] = {
 133         {
 134                 .start  = ORION_USB0_PHYS_BASE,
 135                 .end    = ORION_USB0_PHYS_BASE + SZ_4K,
 136                 .flags  = IORESOURCE_MEM,
 137         },
 138         {
 139                 .start  = IRQ_ORION_USB0_CTRL,
 140                 .end    = IRQ_ORION_USB0_CTRL,
 141                 .flags  = IORESOURCE_IRQ,
 142         },
 143 };
 144
 145 static struct resource orion_ehci1_resources[] = {
 146         {
 147                 .start  = ORION_USB1_PHYS_BASE,
 148                 .end    = ORION_USB1_PHYS_BASE + SZ_4K,
 149                 .flags  = IORESOURCE_MEM,
 150         },
 151         {
 152                 .start  = IRQ_ORION_USB1_CTRL,
 153                 .end    = IRQ_ORION_USB1_CTRL,
 154                 .flags  = IORESOURCE_IRQ,
 155         },
 156 };
 157
 158 static struct orion_ehci_data orion_ehci_data = {
 159         .dram           = &orion_mbus_dram_info,
 160 };
 161
 162 static u64 ehci_dmamask = 0xffffffffUL;
 163
 164 static struct platform_device orion_ehci0 = {
 165         .name           = "orion-ehci",
 166         .id             = 0,
 167         .dev            = {
 168                 .dma_mask               = &ehci_dmamask,
 169                 .coherent_dma_mask      = 0xffffffff,
 170                 .platform_data          = &orion_ehci_data,
 171         },
 172         .resource       = orion_ehci0_resources,
 173         .num_resources  = ARRAY_SIZE(orion_ehci0_resources),
 174 };
 175
 176 static struct platform_device orion_ehci1 = {
 177         .name           = "orion-ehci",
 178         .id             = 1,
 179         .dev            = {
 180                 .dma_mask               = &ehci_dmamask,
 181                 .coherent_dma_mask      = 0xffffffff,
 182                 .platform_data          = &orion_ehci_data,
 183         },
 184         .resource       = orion_ehci1_resources,
 185         .num_resources  = ARRAY_SIZE(orion_ehci1_resources),
 186 };
 187
 188 /*****************************************************************************
 189  * Gigabit Ethernet port
 190  * (The Orion and Discovery (MV643xx) families use the same Ethernet driver)
 191  ****************************************************************************/
 192
 193 static struct resource orion_eth_shared_resources[] = {
 194         {
 195                 .start  = ORION_ETH_PHYS_BASE + 0x2000,
 196                 .end    = ORION_ETH_PHYS_BASE + 0x3fff,
 197                 .flags  = IORESOURCE_MEM,
 198         },
 199 };
 200
 201 static struct platform_device orion_eth_shared = {
 202         .name           = MV643XX_ETH_SHARED_NAME,
 203         .id             = 0,
 204         .num_resources  = 1,
 205         .resource       = orion_eth_shared_resources,
 206 };
 207
 208 static struct resource orion_eth_resources[] = {
 209         {
 210                 .name   = "eth irq",
 211                 .start  = IRQ_ORION_ETH_SUM,
 212                 .end    = IRQ_ORION_ETH_SUM,
 213                 .flags  = IORESOURCE_IRQ,
 214         }
 215 };
 216
 217 static struct platform_device orion_eth = {
 218         .name           = MV643XX_ETH_NAME,
 219         .id             = 0,
 220         .num_resources  = 1,
 221         .resource       = orion_eth_resources,
 222 };
 223
 224 void __init orion_eth_init(struct mv643xx_eth_platform_data *eth_data)
 225 {
 226         orion_eth.dev.platform_data = eth_data;
 227         platform_device_register(&orion_eth_shared);
 228         platform_device_register(&orion_eth);
 229 }
 230
 231 /*****************************************************************************
 232  * I2C controller
 233  * (The Orion and Discovery (MV643xx) families share the same I2C controller)
 234  ****************************************************************************/
 235
 236 static struct mv64xxx_i2c_pdata orion_i2c_pdata = {
 237         .freq_m         = 8, /* assumes 166 MHz TCLK */
 238         .freq_n         = 3,
 239         .timeout        = 1000, /* Default timeout of 1 second */
 240 };
 241
 242 static struct resource orion_i2c_resources[] = {
 243         {
 244                 .name   = "i2c base",
 245                 .start  = I2C_PHYS_BASE,
 246                 .end    = I2C_PHYS_BASE + 0x20 -1,
 247                 .flags  = IORESOURCE_MEM,
 248         },
 249         {
 250                 .name   = "i2c irq",
 251                 .start  = IRQ_ORION_I2C,
 252                 .end    = IRQ_ORION_I2C,
 253                 .flags  = IORESOURCE_IRQ,
 254         },
 255 };
 256
 257 static struct platform_device orion_i2c = {
 258         .name           = MV64XXX_I2C_CTLR_NAME,
 259         .id             = 0,
 260         .num_resources  = ARRAY_SIZE(orion_i2c_resources),
 261         .resource       = orion_i2c_resources,
 262         .dev            = {
 263                 .platform_data = &orion_i2c_pdata,
 264         },
 265 };
 266
 267 /*****************************************************************************
 268  * Sata port
 269  ****************************************************************************/
 270 static struct resource orion_sata_resources[] = {
 271         {
 272                 .name   = "sata base",
 273                 .start  = ORION_SATA_PHYS_BASE,
 274                 .end    = ORION_SATA_PHYS_BASE + 0x5000 - 1,
 275                 .flags  = IORESOURCE_MEM,
 276         },
 277         {
 278                 .name   = "sata irq",
 279                 .start  = IRQ_ORION_SATA,
 280                 .end    = IRQ_ORION_SATA,
 281                 .flags  = IORESOURCE_IRQ,
 282         },
 283 };
 284
 285 static struct platform_device orion_sata = {
 286         .name           = "sata_mv",
 287         .id             = 0,
 288         .dev            = {
 289                 .coherent_dma_mask      = 0xffffffff,
 290         },
 291         .num_resources  = ARRAY_SIZE(orion_sata_resources),
 292         .resource       = orion_sata_resources,
 293 };
 294
 295 void __init orion_sata_init(struct mv_sata_platform_data *sata_data)
 296 {
 297         sata_data->dram = &orion_mbus_dram_info;
 298         orion_sata.dev.platform_data = sata_data;
 299         platform_device_register(&orion_sata);
 300 }
 301
 302 /*****************************************************************************
 303  * Time handling
 304  ****************************************************************************/
 305
 306 static void orion_timer_init(void)
 307 {
 308         orion_time_init(IRQ_ORION_BRIDGE, ORION_TCLK);
 309 }
 310
 311 struct sys_timer orion_timer = {
 312         .init = orion_timer_init,
 313 };
 314
 315 /*****************************************************************************
 316  * General
 317  ****************************************************************************/
 318
 319 /*
 320  * Identify device ID and rev from PCIE configuration header space '0'.
 321  */
 322 static void orion_id(u32 *dev, u32 *rev, char **dev_name)
 323 {
 324         orion_pcie_id(dev, rev);
 325
 326         if (*dev == MV88F5281_DEV_ID) {
 327                 if (*rev == MV88F5281_REV_D2) {
 328                         *dev_name = "MV88F5281-D2";
 329                 } else if (*rev == MV88F5281_REV_D1) {
 330                         *dev_name = "MV88F5281-D1";
 331                 } else {
 332                         *dev_name = "MV88F5281-Rev-Unsupported";
 333                 }
 334         } else if (*dev == MV88F5182_DEV_ID) {
 335                 if (*rev == MV88F5182_REV_A2) {
 336                         *dev_name = "MV88F5182-A2";
 337                 } else {
 338                         *dev_name = "MV88F5182-Rev-Unsupported";
 339                 }
 340         } else if (*dev == MV88F5181_DEV_ID) {
 341                 if (*rev == MV88F5181_REV_B1) {
 342                         *dev_name = "MV88F5181-Rev-B1";
 343                 } else {
 344                         *dev_name = "MV88F5181-Rev-Unsupported";
 345                 }
 346         } else {
 347                 *dev_name = "Device-Unknown";
 348         }
 349 }
 350
 351 void __init orion_init(void)
 352 {
 353         char *dev_name;
 354         u32 dev, rev;
 355
 356         orion_id(&dev, &rev, &dev_name);
 357         printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, ORION_TCLK);
 358
 359         /*
 360          * Setup Orion address map
 361          */
 362         orion_setup_cpu_wins();
 363         orion_setup_eth_wins();
 364
 365         /*
 366          * REgister devices
 367          */
 368         platform_device_register(&orion_uart);
 369         platform_device_register(&orion_ehci0);
 370         if (dev == MV88F5182_DEV_ID)
 371                 platform_device_register(&orion_ehci1);
 372         platform_device_register(&orion_i2c);
 373 }
 374
 375 /*
 376  * Many orion-based systems have buggy bootloader implementations.
 377  * This is a common fixup for bogus memory tags.
 378  */
 379 void __init tag_fixup_mem32(struct machine_desc *mdesc, struct tag *t,
 380                             char **from, struct meminfo *meminfo)
 381 {
 382         for (; t->hdr.size; t = tag_next(t))
 383                 if (t->hdr.tag == ATAG_MEM &&
 384                     (!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
 385                      t->u.mem.start & ~PAGE_MASK)) {
 386                         printk(KERN_WARNING
 387                                "Clearing invalid memory bank %dKB@0x%08x\n",
 388                                t->u.mem.size / 1024, t->u.mem.start);
 389                         t->hdr.tag = 0;
 390                 }
 391 }